/*
 * Copyright 2017 Google Inc. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.android.flexbox.validators

import android.text.TextUtils

/**
 * Validator for dimension values including match_parent and wrap_content.
 */
class DimensionInputValidator : InputValidator {

    override fun isValidInput(charSequence: CharSequence): Boolean {
        // -1 represents match_parent, -2 represents wrap_content
        return !charSequence.isEmpty() && (TextUtils.isDigitsOnly(charSequence) ||
                charSequence.toString() == "-1" ||
                charSequence.toString() == "-2")
    }
}
